HDR, High Dynamic Range, is a fairly fun and hard thing to do in my opinion. To do a HDR photo you will want to a picture where you light meter inside is in the middle and take the image. then you want to take another pic that is one f-stop above and one f-stop below. Once you are done taking those picture you can merge them in photo shop by going to the file tab and go to automate and then hit merge HDR. then you just go through the steps in the window that pops up. Sometimes it tells you the RAW will give you more details. In my experience so far it is fine if you do JPEG, PSD, or RAW files.
Here are some examples of my HDR.
Someone else that I know of that does really cool HDR photos is Darryl Jones.



